ThermaSol

ThermaSol Fortis Sauna Cabin

The Fortis Sauna Cabin from ThermaSol is a sleek, enclosed outdoor retreat that delivers an energy efficient and durable wellness experience for all seasons.

Regular price $49,000.00 USD
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Science Meets Sanctuary

Discover environments engineered for more than just aesthetics—integrated thermal efficiency, Grade-A hardwoods, and architectural silhouettes designed to elevate your biological performance and daily ritual.

Seamless Integration

Engineered for any environment—whether it’s a modern indoor gym or an expansive outdoor landscape. Our systems offer professional-grade recovery without compromising your property's architectural character.

ThermaSol Fortis Sauna Cabin

Regular price $49,000.00 USD
Monthly Estimate
$208/mo
Purchase Price $15,000
$5,000 $61,500
Term
Down Payment $0
Interest 0%
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*Estimated payment for illustration purposes only
Affirm USA Financing
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A Sanctuary Within Reach

Pay Monthly for Your Suite

We believe that uncompromising quality should be accessible. By partnering with the leaders in consumer financing, we allow you to transform your home spa into a world-class sanctuary today.

Low Monthly Payments

Distribute the cost of your premium sauna or cold plunge over several years.

High Credit Limits

Secure financing for projects up to $40,000 with competitive terms.

Instant Approval

Get a decision in seconds without affecting your credit score for pre-qualification.

Flexible Terms

Choose a plan that fits your lifestyle, with terms ranging from 12 to 84 months.

Everything You Need to Know

Description

Combining contemporary architecture with robust materials, the Fortis Sauna Cabin is a private, light-filled wellness sanctuary. 

The Fortis is highlighted by the modern, eave-style roofline offering a slight overhang which encapsulates the sauna interior. The Nordic thermo-spruce and pinewood exterior features unique natural textures to blend in with the outdoors, a stark contrast with the contemporary glass front. Parsol dark grey glass with aluminum framing adorns front-facing facade, with hidden hinges and coat hooks offering both sleek styling and utility. 

Inside, the Fortis hosts multi-layer wood fiber insulation to keep the interior cozy and energy efficient year-round. Brushed thermo-spruce walls offer a warm, textural contrast in comparison to the sleek thermo-aspen benches and backrests. RGB LED illumination from recessed locations compliment the inviting atmosphere, with an included control to adjust users desired ambiance. Bathing enthusiasts can sit back and enjoy the Harvia Virta's abundant heat and steam through the Harvia Xenio control for year-round sauna sessions.

Supported by a 1-year warranty, the ThermaSol Fortis outdoor sauna delivers powerful performance and refined wellness in a modern, contemporary space.

Features
  • Brushed Thermo-Spruce and Pinewood exterior offering unique contrast with a natural finish.
  • Thermo-aspen interior walls, benches and backrests for comfort, stability and moisture resistance. 
  • 8mm Parsol Dark Grey Glass with hidden aluminum framing for a contemporary look which provides solar protection.
  • All-season durability provided by multi-layer wood fiber insulation and a Firestone EPDM roof.
  • Integrated RGB LED color light therapy with control for a custom ambiance.
  • Ideal for gardens, patios, and backyard wellness spaces.
  • Arrives fully assembled with pre-wired electrical for turnkey use.
  • Dimensions: 87"W (221 cm) x 90"D (228.6 cm) x 89"H (226.1 cm)
  • Designed and crafted in the U.S.A.
  • 1-year warranty
Includes

Fortis Sauna Cabin

  • Pre-Assembled Sauna Cabin
  • Harvia Virta 8kW Sauna Heater with Wi-Fi
  • Harvia Xenio CX45 Digital Control with Wi-Fi
  • Harvia AC3020 Sauna Stones (3 Boxes)
  • Installation Instructions
  • 1-Year Warranty
Specification

Model

FORTIS SAUNA CABIN

Exterior Material

Brushed Thermo-Spruce & Pinewood

Interior Material

Thermo-Aspen

Door Material

8mm Parsol Dark Grey Glass with Hidden Aluminum Framing

Sauna Heater

Harvia Virta 8kW with Wi-Fi

Capacity

3-4 People

Width

87" (221 cm)

Depth

90" (228.6 cm)

Height

89" (226.1 cm)

Bench Depth

24" (61 cm)

Lighting

RGB LED Color Light Therapy

Weight

2161 lbs (980.2 kg)

Shipping Weight

2381 lbs (1080 kg)

Sauna Control

Harvia Xenio CX45 with Wi-Fi

Shipping

Shipping costs are determined based on location. Outdoor saunas are delivered via flatbed trailer and fully assembled.



Customers are notified two weeks prior to the scheduled delivery to allow time for preparation. A forklift or crane is required for placement, and a licensed electrician must install the heater. Due to its size and weight, manual offloading is not recommended. Please ensure the proper equipment is available at the time of delivery.



Please ensure you are fully prepared to receive and unload your sauna in accordance with the instructions provided in your manual.



The path from delivery point to placement site must be clear and accessible for equipment. Saunas should be installed on a firm, level surface with slight runoff for drainage—such as concrete, decking, pavers, or compacted gravel.



For complete guidelines, please refer to the product manuals.

Product Detail & Specifications

Built for those who value quality and wellness. Each product is crafted with carefully selected materials, precision engineering, and thoughtful design that you can enjoy the perfect experience, every time.

ThermaSol Fortis Sauna Cabin
Brand
ThermaSol
Manufacturer
ThermaSol
Gross Weight
2161 lbs (980.2 kg)
Seating Capacity
1-4
Wood Type
Brushed Thermo-Spruce & Pinewood & Thermo-Aspen
Heating Option
Electric
Type of Sauna
Luxury

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FAQ

Got Questions? We've Got Answers.

Everything you need to know before, during, and after your purchase — from shipping and financing to warranties and installation.

Still have questions?

+1 (888) 395-0022

Available 24/7 — We answer.

Most of our premium saunas are shipped within 5 to 10 business days. Delivery times vary by model and location, but you can typically expect your sanctuary to arrive within 2 to 4 weeks. Once your order is dispatched, you will receive a tracking number and a dedicated delivery appointment to ensure a seamless arrival.
Yes. We partner with Affirm and Ifinance to offer flexible, transparent monthly payment plans. You can see your personalized options at checkout or directly on the product pages. This allows you to invest in your wellness journey today and pay over time with no hidden fees.
We stand behind the quality of our curated selection. If you change your mind, we accept returns on most unused products in their original packaging within 30 days. Please note that due to the specialized nature of our equipment, return shipping and restocking fees may apply. Our goal is your total satisfaction; contact our specialist team for any specific concerns.
Absolutely. Every sauna and cold plunge we carry is backed by a robust manufacturer’s warranty—often ranging from 1-10 years on specific components like heaters and cabinetry. We only partner with brands known for their long-term reliability and exceptional after-sales support.
We don't offer direct installation, but we partner with certified local technicians across North America. Our specialist team can connect you with a vetted installer in your area. Most of our saunas are also designed for straightforward DIY assembly with detailed instructions included.
We carry over 20 of the world's leading wellness brands including Kohler, ThermaSOL, Golden Designs, Harvia, HUUM, IKI, Narvi, Mr. Steam, Iglucraft, Haljas, Finnmark, Dynamic Sauna, and more. Our catalog spans infrared, traditional, barrel, and cabin saunas as well as cold plunges and wooden hot tubs.
It depends on your goals: Infrared is perfect for deep tissue detox and muscle recovery at lower temperatures, while Traditional saunas offer the classic high-heat, high-humidity experience. If you are unsure, our experts are available 24/7 via live chat to help you design the perfect suite for your home.
In many cases, yes. Saunas are often eligible for HSA or FSA reimbursement when used to treat a specific medical condition (like chronic pain or cardiovascular health) with a Letter of Medical Necessity from your doctor. We recommend checking with your plan provider to maximize your tax-free savings.